Browse > Article

MIMO MB-OFDM System  

Heo Joo (인하대학교 정보통신대학원 이동통신 연구실)
Chang Kyung Hi (인하대학교 정보통신대학원 이동통신 연구실)
Abstract
This paper describes and analyzes the performance of MB-OFDM UWB system that is suggested as one of standards in IEEE 802.15 TG3a for UWB application. UMBchannel model that has been contributed in IEEE 802.15 SG3a is a wideband channel model of 6Ghz bandwidth, so we modify it to have 3 subband channels that are obtained by filtering conventional U Channel, considering center frequency hopping and system bandwidth. From simulations, we compare performances of MB-OFDM system in AWGN and WB channel and verify the frequency and time domain diversity gains from time End frequency spreading technique. We also compare and analyze the performance of proposed SFBC MB-OFDM with that of conventional MB-OFDM system. Simulation results show SFBC MB-OFDM system outperforms conventional MB-OFDM system about 1.5dB of Eb/No at target BER of 10$^{-m4}$./.
Keywords
UWB; MB-OFDM; SFBC; Time Diversity; Frequency Diversity; Spatialial Diveristy;
Citations & Related Records
연도 인용수 순위
  • Reference
1 박경원, 석원균, 김동한, 조용수, 'MB-OFDM 기술 및 동기화기법', SK-Telecom. Review, 제 14권 2호, pp. 202-215, Apr. 2004
2 K. F. Lee, D. B. Williams, ' A Space-Frequency Transmitter Diversity Technique for OFDM Systems', in Proc. IEEE GLOBECOM, Dec. 2000, vol. 3, pp. 1473-1477
3 Anuj Batra et al.. Texas Instruments et al., Multi-band OFDM Physical Layer Proposal for IEEE 802.15 Task Group 3a, IEEE P802.15-03/268r3, Mar. 2004
4 Jeff Foerster, Sub-committee Chair, Channel Modeling Sub-commiter Report, IEEE P802.15-02/490r1-SG3a, Feb. 2003
5 R. V. Nee and R. Prasad, OFDM for Wireless Multimedia Communications, Artech House, Boston, NJ, 2000